photo sharing and upload picture albums photo forums search pictures popular photos photography help login
David Rosenthal | profile | all galleries >> Astrophotography >> Nebulae tree view | thumbnails | slideshow

Nebulae | Galaxies | Clusters | Solar System | Hydrogen Alpha | Published | Widefield | Multiple Star Systems | In Process Images | Misc | Analysis | private | Equipment

Nebulae

    "Nebulae are the birthplace of stars. They are formed when very diffuse molecular clouds begin to collapse under their own gravity, often due to the influence of a nearby supernova explosion. The cloud collapses and fragments, sometimes forming hundreds of new stars. The newly-formed stars ionize the surrounding gas to produce an emission nebula. The nebula's gravity pulls the cloud inward and it starts to spin in the middle eventually gaining enough friction to be hot enough for nuclear fusion to occur. Other nebulae are formed by the death of stars; a star that undergoes the transition to a white dwarf blows off its outer layer to form a planetary nebula. Novae and supernovae can also create nebulae known as nova remnants and supernova remnants, respectively." (Wikipedia)
NGC7023 LRGB
NGC7023 LRGB
NGC6960 BiColor
NGC6960 BiColor
IC5070 SHO
IC5070 SHO
IC5070 BiColor
IC5070 BiColor
2013
:: 2013 ::
2012
:: 2012 ::
2011
:: 2011 ::
2010
:: 2010 ::
2009
:: 2009 ::
2008
:: 2008 ::
2007
:: 2007 ::
2006
:: 2006 ::